<?php


// 抽象类
abstract class Father
{
	abstract public function run();
	abstract public function xbs();

	public function test()
	{
		echo "456546";
	}
}

class Dog extends Father
{
	public function run($value='')
	{
		echo '888';
	}
}
/**
 * 
 */
class Cat extends Father
{
	
	public function run($value='')
	{
		echo '888';
	}
}

$dog = new Cat();